Replacement Power Micro-Switches?

Joe asks: "I ordered a case over the internet and had to let it sit for a while before I got to it. Thus the Internet retailer will have nothing to do with me. As I examined it I noticed one of the wire leads to the power micro-switch was broken. given the nature of the break it would be more work than it is worth to fix it. after searching the net, I found plenty of electronics suppliers but they were all searchable by product number only. I need to know where I can find just the micro-switch. By the way this is the most frustrating hold back to building a machine I have encoutered." I too have run into problems with power switches and machines. Fortunately I had a local computer store who had clerks-with-a-clue to help me out. Where else can one go to find replacement power switches, both on and offline?